activity, on the campus of the massachusetts institute of technology, m.i.t., in cambridge, where one police officer was shot and killed. it wasn't until roughly 2:00 in the morning east coast that -- i'm told now -- i see them. the police station, the mobile station, mobile command center, has moved from here on the crime scene and is now going to whereabouts unknown. we don't know where. but the fact it would be doing so at 2:30 in the morning is an interesting development in what's going on. in any case, to recap at 10:30 this evening there was a shooting on the campus of mrchlgts i.t. in cambridge, a police officer was killed. also a carjacking. one suspect was apprehended in watertown. that person has been apprehended and arrested. we don't know if what's going on in cambridge and watertown is related at all to what took place on monday, but obviously there is a heightened police presence, a heightened law enforcement presence, both boston police and the fbi. i'm going to check in right now with juliette kayyem, if she's fill on the phone. are you still there? >> i am. hi, jake.